researchers in england and canada say they've identified a bad gene that lowers pain tolerance and creates the migraine sensation. >> now that we know that there is this key player and we know where to target, well, that then is the place to start looking for drugs that will be active against that. >> shepard: in other words, find a drug that can click off that gene and in doing so, kill the pain. that scientist tells britain's newspaper that the gene discovery and i quote, could potentially lead to treatment for pain in general. no matter what kind of pain you have. you can read the full study in nature magazine. >>> fox news, america's election headquarters, and the white house making a big push now to rally young voters. president obama attending a democratic national committee rally at the university of wisconsin and the vice president joe biden also going back to school. he spoke earlier today at a rally at pennsylvania state university. penn state. it's the first in a series of appearances meant to get students fired up about november elections to try to fight off republican attempts